Combination latch and key lock.



RlWETTEL & M. P. PREEBEY. COMBINATION LATGH AND KEY LOOK.

' APPLIOATION FILED FEB. '15, 1900. Patentd Oct. 6 1908. 2 SHEETS-SHEET1.

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B. WETTEL' & M. P. FRBEBEY. GOMBINATION LATCH AND KEY LOOK.

, APPLIOATIONIILBD 1 31;.15 1906. 900,629. Y I

Patented Oct. 6, 1908.

2 SHEETS-SHEET 2.

Babe/Z Weifel war-TED STATES PATENT OFFICE.

ROBERT WETTEL AND MORDEOAI P. FREEBEY, OF LOS ANGELES, CALIFORNIA.

COMBINATION LATCH AND KEY, LocK.

- Specification of Letters Patent.

Application filed February 15, 1906. Serial No. 301,205

To all whom it may concern: I

Be it known that we, ROBERT WETTEL and MORDECAI P. FREEBE both citizensof the United States, residing at Los Angeles in the county of LosAngeles and State of California, have invented a new andusefulComfollowing is a specification. 1 7

It is of the objects of this invention to provide a door-lock, whichwhen locked with a key can only be unlocked by the combined use of thekey and the handle of the latch; to provide a lock that is non-pickable;to

. provide a combination and key-lock adapted to be unlocked from eitherside; to provide a door-lock giving maxnnum security w1th minimum costof constructlon and maximum simplicity of parts.

The invention includes a lock provided with a key-operable bolt; meansfor intercepting said bolt, and means operable inclependently of the keyfor retracting the bolt-intercepting.means. Said independent means forretracting the bolt-intercepting means may be provided with acombination or permutation device, and by such means the possessor of akey which fits the lock will be unable to unlock the lock unless he ismaster of the combination.

The accompanying drawings illustrate the invention. 7

Figure 1 is a view of the lock, the key-bolt 7 being unlocked, and thelatch-bolt in latch ing position. Fig. 2 shows the same look after thekey-bolt has been thrown into looking position. A key is shown in thelock. Heavy dotted lines indicate the completion of the first movementof the latch in the operation of unlocking. Fig. 3 is a view of the samelook showing the first movement of the key-bolt for unlocking the sameafter the first unlocking movement of the latch has been completed. Fig.4 is a like view of the lock showing the second unlocking latch movementcompleted and the key-bolt entirely released ready for unlocking Aportion of the latch is broken for clearness of illustration. Fig. 5shows the final unlocked and unlatched position. In Figs. 1,-

I plates fin lace. Line as, Fig. 8, indicates the line 0 section. Fig. 7is a section on line 00 a", Fig. 1. Fig. Sis a section ofthe .lock inplace in a door, the door-knobs or Lines 02 Figs. 1 and handles beingshown. 6, indicate lines of section. Figs. 9 and 10 are detached viewsillustrating the normal V i and an operative position of thelocking-bar. blnation Latch and Key Look, of which the Fig. 11 is asection on line {B -a2 Figs. 9 and 10. Y

Patented Oct. 6, 1908.

1 is the frame or case of the lock; 2, the

latch; 3, the key-bolt; 1, the latch-spindle; 5, the latch-dog mountedon the latch-spindle and having the usual latch actuating iarms 6 and 7,and also having a lock-bar actuating arm 8. a

9 is the usual latch-lever pivoted to the latch 2 by stud l0 andnormally held in latching position by the usual latch-spring 11 andframe-stud'12.

13 is the usual key for the key-bolt 3.

14 is the usual key-bolt tumbler pivoted at 15, and 16 is the springtherefor. 17 is the usual lug on the key-bolt 3 to engage said tumbler14:, and 18, 19, are the usual key-bolt studs.

20 is a gain or notch in the key-bolt, and 21 is a catch pivoted to thecase by pivot 22, and yieldingly held in engagement with the walls ofthe notch 20 of the bolt 3 by spring 16;

The tooth 23- of the catch 21 which engages the notch 20 of the bolt 3is of less dimensions ciently to allow it to be entirely retracted bymeans of the key 13 until the tooth 23 is withdrawn from the notch 20.

The pivoted catch 21 extends into the path of the arm "6 of thelatcl1-dog, and is constructed with a head 24 and a notch 25 adapted tobe engaged by the arm6 for the purpose of retracting the tooth 23 fromthe notch 20 when the spindle 41 is turned to a determined point, and toallow the tooth to again engage the notch when the latchspindle 4 isturned beyond such point sulficiently to allow the arm 6 to enter thenotch 25. The construction just described constitutes means operated bythe latch-spindle for locking and unlocking the key-bolt. 26 in ageneral way designates other means operated by the latch-spindle forlocking and re leasing the key-bolt; said other key-bolt locking .andreleasing means may be variously constructed. In the drawing we haveshown a form which we at present deem preferable. In this form alock-bar is provided consisting of two members 27, 28, yieldinglysecured together by pin 29 and spring 30 and provided with a recess 31adapted to receive the rear end of key-bolt 3 to allow the bolt to beretracted when the lock-bar is in a de termined position.

The lock-bar 27, 28, and the key-bolt catch 21 are at opposite sides ofthe latch-actuating arm 6 and lock-bar operating-arm 8, so that when thelatch-dog is turned in one direction it will operate the key-bolt catch21, and when turned in the other direction will operate the lock-barmember 27.

32, 33, are abutments on the lock-bar on each side of the recess 31 tointercept the end of the key-bolt 3 when the lock-bar is in any otherthan said determined position.

34 designates guides for the lock-bar, and 35 is a spring for normallyholding the lockbar in position to prevent the key-bolt from beingretracted.

36 is a projection shown on the lock-bar to be engaged by the lock-baractuating-arm 8 of the latch-dog.

The abutments 32, 33, of the lock-bar and the rear end 37 of thekey-bolt may be serrated, as shown in the drawings, so that when thekey-bolt engages either of the abutments the lockbar will be heldagainst retraction.

38 is a stationary permutation plate on the escutcheon plate 39 of thelock, and 40 is a rotatable permutation plate mounted on and rotatingwith the latchspindle 4.

41 and 42 designate the permutation characters on said plates 38, 40,respectively.

The catch 21 and the lock-bar 27, 28, constitute a plurality ofindependent boltintercepting means, and the latch-dog 5 with its parts 6and 8, constitutes means operable in one and then in the other directionfor first retracting one and then the other of said bolt-interceptingmeans, and the key 13 and latclrspindle at must be appropriatelymanipulated in alternation in order to retract the key-bolt 3.

In practical use, when the key-bolt is retracted, as shown in Fig. 1,the latch 2 is free to be moved by the manipulation of the spindle 4t,and at each movement of the handle for the releasing of the latch 2 thelock-bar 27 Will be operated.

When it is desired to lock the lock, the same may be accomplished in theusual manner by the key 13, as indicated in Fig. 2, whereupon thekey-bolt catch 21 engages in the notch 20 thus to prevent the retractionof the key-bolt 3 until the catch is released by operating thelatch-spindle 4:.

It will be noted from Fig. 2 that when the key-bolt is locked thelock-bar member 27 intercepts the key-bolt 3 to prevent its retraction.In said Fig. 2 the key-bolt is preunla-tch the door.

vented from initial retraction by the abutment 32 until the lock-barmember 27 is retracted into position indicated by the heavy dotted linesby turning spimlle 4'.

hen the latch has been moved into the position indicated in dotted linesin Fig. 2, and in solid lines in Fig. 3, it is possible to retract thekey-bolt, as indicated in Fig. 3, until the outer wall of notch 20engages the catch tooth 23 which prevents complete retraction of thekey-bolt until the latchspindle 1- is turned to cause the dog (3 toengage the head 2a of the catch 21 and move said catch to withdraw thetooth 23 from the notch 20.

It is to be understood that when the key 13 is turned for the purpose ofretracting the key-bolt, it lifts the dog 14 to release the key-bolt.hen the latch-spindle is stopped at the appropriate place, the key canbe further turned to thus entirely retract the key-bolt 3 into therecess 31 therefor.

If the latch-dog 5 is not turned appropriately relative to themanipulations of the key, the key-bolt will not be released by the catch21, and it is necessary in order to unlock the key-bolt that thelatch-spindle 4 first be turned in one direction to a determinedposition; then the key-bolt must be moved by the key to a determinedposition;

then the latch must be moved in an opposite direction to a determinedposition, and thereupon the key may be operated to fully retract thekey-bolt.

In practice, the parts may be so constructed that the recess 31 mayreceive the bolt 3 when the latch-spindle has not been turned far enoughto fully retract the latch,

so that after the bolt 3 has been fully rctracted there must be afurther releasing movement of the latch-handle in order to Such furthermovement is allowed by the spring 30 which is arranged to normally holdthe abutment 33 at a distance from abutment 32 equal to the width of theend of the bolt 3, so that in case the latch-handle is turned too farbefore the bolt 3 is retracted the abutment 33 will intercept the bolt.If the latch-spindle is not turned far enough the spring 35 holds theabutment 32 in position to intercept the bolt. If the bolt is retractedwhile either abutment is in the path of the bolt, the serrations engageand prevent movement of the intercepting abutment.

The lower guide 34 extends from the rim of the frame to the bolt 3 so asto prevent anyone from reaching the member 28 of the lock-bar by meansof an instrument inserted. through the key-hole 4:3.

By reason of the latch spindle being provided with. dogs adapted tocollide with movable elements of the lock to operate the same, but beingdetached from said elements of the lock. it is possible, by the aid ofthe indioating means consisting of the characters on plates 38 and L0,to operate: the lock with the secrecy of a combination look.

What we claim is l. A lock provided with a bolt, a plurality ofbolt-intercepting dogs, a key for releasing one of said dogs andoperating the bolt, and means operable first in one and then in theother direction for releasing first one and then another of the otherbolt-intercepting dogs.

2. A lock provided with a latch and a bolt, a plurality of means forintercepting the bolt, and means for retracting the latch operable inone and the other direction to operate first one and then another of thebolt-intercepting means.

3. A lock provided with a bolt, a lock bar in the path of the boltprovided with yieldingly separable abutments spaced apart to provide arecess to receive the end of the bolt, means to retract the bolt, meansto move the lock-bar into position to admit the end of the bolt intosaid recess, and a latch spindle adapted to move the recess in the lockbar beyond the end of the bolt when the bolt is extended. 4. In a look,a bolt, a latch, a lock-bar to intercept the bolt, said lock-bar beingformed of two members yieldingly connected together and provided withabutments respectively, and with a recess to receive the bolt betweensaid abutments; means to retract the latch and to move the lock-bar.

'In testimony whereof, we have hereunto set our hands at Los Angeles,California this 8th day of February 1906.

ROBERT WETTEL. MORDEOAI P. FREEBEY. In presence of- JAMES R. TOWNSEND,JULIA TOWNSEND.

